Tool Check
Best AI for ai agents
All tasks
AI agents
Which model works best as an AI agent?
Our pickClaude Opus 5.5Anthropic · $4 in · $20 outThe best model anyone can use, with enough evidence. When several tie, the cheapest of them.
Best you can downloadKimi K3Moonshot AI (Kimi) · No public API price · downloadOpen weights: you can run it on your own computers.
Cheaper choiceGPT-6.1 SolOpenAI · $2 in · $10 outIn the top five, about 50% cheaper than our pick.
| Place | Model | Score | Price |
|---|---|---|---|
| 1 | Claude Opus 5.5Anthropic | 100.0 | $4 in · $20 out |
| 2 | GPT-6 AstraOpenAI | 96.7 | $10 in · $50 out |
| 3 | GPT-6.1 SolOpenAI | 94.9 | $2 in · $10 out |
| 4 | Claude Fable 5.1Anthropic | 94.4 | $10 in · $50 out |
| 5 | GPT-6 SolOpenAI | 89.1 | $2 in · $10 out |
| 6 | Claude Opus 5Anthropic | 86.1 | $5 in · $25 out |
| 7 | GPT-5.6 SolOpenAI | 84.0 | $4 in · $20 out |
| 8 | Qwen3.8 MaxAlibaba (Qwen) | 83.8 | No public API price |
| 9 | Claude Fable 5Anthropic | 80.6 | $10 in · $50 out |
| 10 | Claude Opus 4.8Anthropic | 78.8 | $5 in · $25 out |
Models with overlapping uncertainty share a place (shown as “=”). Prices are US dollars per million tokens from each company’s own price page.
Ranked by our Silicon score, from 3 tests by 3 publishers.